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MHT CET202618 April 2026Evening ShiftPhysicsWave OpticsActual

In an optical instrument- microscope, the wavelength of light used are ₁ = 6800 Å and ₂ = 5100 Å. The ratio of the resolving power of microscope corresponding to ' ₁ ' to that for ' ₂ ' is

Options

  1. A9:16
  2. B5:4
  3. C4:3
  4. D3:4

Correct answer

D. 3:4

Step-by-step solution

The resolving power of a microscope is given by the formula: RP = 2 This shows that the resolving power is inversely proportional to the wavelength of the light used: RP 1 The ratio of the resolving power for ₁ to that for ₂ is: RP₁ RP₂ = ₂ ₁ Substituting the given values ₁ = 6800 and ₂ = 5100 : RP₁ RP₂ = 5100 6800 = 51 68 = 3 4 The ratio is 3:4 .

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